Definition of "NS"
NS
proper noun
(rail transport) Initialism of Nederlandse Spoorwegen. (Dutch Railways)
(Malaysia) Initialism of Negeri Sembilan
(Singapore) Initialism of national service
noun
Initialism of neutral spirit (“alcohol”).
(Ireland, usually as part of a name) Initialism of National School.
(informal) Initialism of NATO state.
(politics, Internet slang) Initialism of National Socialism